Propeller-mounting.



P. PETRES.

PROPELLER MOUNTING. I APPLICATION FILED MAY 29, 1915.

1,179,554., Patented Apr. 18, 1916.

WITNESSES: INVE/V TOR ED STATES PATENT carton.

PROPELLER-MOUNTING.

Specification of Letters Patent.

Patented Apr. 18, 1916.

Application filed May 29, 1915. Serial No. 31,233.

whereby the vanes or blades although set rigidly in their hub or holder, are dirigibly operated with relation to their plane of action.

A second object is to provide means whereby changes in the direction of blade thrust are accomplished in a novel and thoroughly practical manner, easily regulated as to extent and operable from any distance.

These obj cots are attained by the novel con-- struction and arrangement of parts, hereinafter described and shown in the annexed drawing, forming part of this specification, and in which p Figure 1 is a side elevation of a two bladed propeller, mounted in a housing constructed in accordance with the invention, the blades being extended lengthwise of the structure. Fig. 2 is a similar view of the propeller, but shown turned transversely of its supports and indicating the position assumed by the vanes when the sliding element is in the position shown by the broken lines in Fig. 1. Fig. 3 is an enlarged longitudinal section, taken through the upper support and driving means, substantially on the center line of Fig. 1. Fig. 4. is a similarly enlarged transverse sectional view, and Fig. 5 is a longitudinal sectional view showing the arrangement of sliding element and lower support.

The housing is comprised of a substan tially rectangular frame rigidly supported in any approved manner by the structure to which the propeller is attached. To the main bar 10 of the frame is connected a parallelouter bar 11 by means of end elements. At the center of the bar 10 is a bearing 14 for the driving shaft 15, to the stub end of which is rigidly engaged a flattened spheri cal coupling 16 hingedly secured in a driver 17 by means of the pivot pins 18.

The propeller blades 20, which are of any approved design, are rigid with the hub or holder 21. the hub being recessed to contain the driver 17, which is secured rigidly in the hub by means of the plate 22. Formed with the driver 17 are lugs 23-extending flush with the parallel sides of the hub 21 and pivotally secured to these lugs are the arms 24 of a fork, the connecting bar 25 of which is formed with a boss or hub 26 in which is rigidly engaged a shaft 27 by which the fork is turned upon the pivots 28. Slidably engaged with the outer bar 11 is a traveler 80, movable by suitable connections, not shown, by an operator; in thistraveler is a bearing 31, fitted with balls or other anti-friction device, to receive the shaft 27, the bearing being held in a recess 32, formed in the traveler 30, by the pivots 33. order to accommodate'the end of the shaft 27, a slot 34 is formed longitudinally in the.

center of the bar 11.

- -In operation, when the shafts 15 and 27 are in alinement the blades of the propeller operate in the usual manner as they rotate, their angularity remaining the same. If however the traveler 30 be moved on the bar 11 so as to position the shaft 27 at an angle with the shaft 15, the blades will be unaffected while extended in the direction of the frame, but when revolved the hub is turned at an angle by virtue of the pivotal attachment between the coupling 16 and driver 17, so as to cause one of the blades to lie in a plane parallel to the frame while the other is given an additional amount of angularity. Thus the operative angularity of the blades can be changed at any time, even when rotating thereby giving an increased thrust on one side, the other side being correspondingly reduced. The change taking place gradually and having its greatest effect when the blades are extended laterally, producing an effective means for steering a vessel as well as propelling it.

It will be understood that any driving means may be employed and that the mounting may be attached to any structure whatada'ptions may be made, variant from the exact construction shown, without departing from the scope of the claim hereto appended.

Having thus described the invention and indicated the manner of its construction and use, what I claim as'newand desire to secure by Letters Patent, is

In a dirigible propeller, the combination with the blades, a hub and a rigid supportsaid hub whereby the latter may be rotated ing frame, of a driving shaft extending in a plane transverse to the axis of said 1) through said support frame, gimbal joints driving shaft.

engaging between said hub and the end of 5 said shaft, a rigid bar held stationary adjacent to the side of said hub opposite to Witnesses:

said shaft, a traveler slidable on said. bar ALEXANDER DENEs, 'f a and connections between said traveler and MICHAEL TRAUTMAN.

PAUL PETRES. 

